Dudes are pretty lucky overall when it comes to their bodies. We mean, they don’t have to deal with a monthly flow, they tend to lose weight the second they try, and of course, they don’t have to bear children. So we can’t really blame them for having some pretty hilarious reactions to finding out what a female body actually goes through during a pregnancy.

In the video above, random guys share their reaction to pregnancy and all of the fun that comes along with it.

Here a little teaser of how they reacted to finding out a woman’s uterus is able to expand to roughly 500 times its size:

“What happens to all the innards?”

And the fact that both a woman’s heart and feet can grow during pregnancy:

“I would imagine the feet have to be bigger so you can balance the person inside you.”

“There’s just too much love!”

Then there are some of the really gross facts, such as the little tidbit that a baby will drink its own urine in the womb, then pee it out. Then drink it again. And so on and so forth:

“That reads like a horror movie script,” one guy remarks.

As if that weren’t enough for these poor chaps to digest, the video then goes on to physically show what a woman’s body looks like as it goes through the various stages of pregnancy, and also to show what the baby’s face looks like as it develops. In our opinion, it’s pretty fascinating stuff whether you’re a man or woman.

Or, as one guy so eloquently put it, “Women just walk around and they’re human making factories — that’s crazy.”

Be sure to watch the video yourself to catch all of the hilarious reactions as recorded.